Farmers keep carbide powder in between raw mangoes. What might be the reason ? What will be the end result after 3 to 4 days ?

If the division of a natural number n by 5 leaves a remainder of 3, what might be the ones digit of n? 1, what might be the ones digit of n? 4, what might be the ones digit of n?

In some area, farmers who grow genetically modified (GM) corn have to make sure there is a gap between GM and non - GM crops. What is the reason for leaving a gap between the crops?

A radioactive isotope has half life of 27 days. Starting with 4g of the isotope, what will be the mass remaining after 75 days ?

The relation between displacement & time of a body is S = (2t^3- 4t^2 + 3t) unit What will be the acceleration after 3s?

The phase difference between two waves reaching a point is (pi)/(2) . What is the resultant amplitude. If the individual amplitude are 3 mm and 4mm ?

The phase difference between two waves reaching a point is pi//2 . What is the resultant amplitude, if the individual amplitudes are 3mm and 4mm ?

Two vectors of magnitudes 5 and 3 give a resultant of magnitude 2. What must be the angle between the two vectors ?

If today is Friday, then what day of the week will be 3 days after tomorrow?